Tufting machine



Sept. 14, 1943. M. CHINNIC! ET AL 2,329,458

TUFTING MACHINE Filed Oct. 4, 1938 3 Sheets-Sheet 1 FIGJ.

, INVENTQRS fllchael C'hznniml, .m/

Rosario danish,

v ATTORNEY.

Sept. 14, 1943. M. CHINNICI ETAL 2,329,458

TUFTING MACHINE 0 Filed Oct. 4, 1938 3 Sheets-Sheet 2 15 1 INVENTORS 3 Micfiael dink/vial, am!

Sept. 14, 1943, M. CHINNICI ET AL TUFTING MACHINE Filed Oct. 4, 1938 3 Sheets-Sheet 5 I,|IH-., 1

I H l Penn-i0 Can is ATTORNEY.

Patented Sept. 14, 1943 7 Brooklyn, N) Y, Y o Application OctoberL1938;S-erialNr-233fl8li 2 Claims; (015112-79)! This invention relates: to tuftlng machines, and particularly to tuftingm'a'chines which auto l matically form and vcut loopsrt'o ccmprisethe tufts,- vI 1 The objects of the invention 'are to-provlde an improved tufting machine for obtaining more rapid formation of even-length tufts; to reduce moving parts to a minimum; to utilize movement of 'the loop-hook:to'alsoroperatethe loop cutter;- toprovide for'adjustment oil cutter; to provide improved linkage and 1 operatingi connections; l to secure simplicity of construction v and operation; and to. obtain other fladvantagesand results as may be brought out the following description: Referring to the: accompanying drawings ;in which like. numerals=of referenceindicate similar parts throughout the-several views:

Figure l is a front view ofa.tufting-;.machine embodying the'present inventiony Figure 2- is an-underneath view= of the same; Figure an anendvview looking toward'the end of the machine havingthe foot and operating,

mechanisms; p Figure 4 is a similar end view showing-the needlewdepressed and' thecut completed; I

Figure 5 'is. a sectional view'on-line 5-5 of Fig; 3 for showing the cuttergmore particularly;-and- Figure 6 is a. plan of thefeeddog, showing: the relationship thereto of the cutter; i a

In the specific embodiment of the invention il. lustrated in said drawings, the reference rnu-' meral l0 designates-the bed plate of themachine havingthe usual. overlying goose-neck I'l; ire-ma which depends presser foot Hand in'which 101 erates a vertically reciprocable' needle l 3- as'is" common practice with sewing machines and the; like. A removable throat plate 1 4- isshown in the areaof the bed plate surrounding the place where the needle passes through, this :throat plate I have ing an opening therein of appropriate-sizeand shape for the serrated feed dog I5 to move as usual therein underiinfluence of usualsupportingq and operating mechanisms. Sufiice'itto'saytl*iat'- Said 'h'oo'ki lw'is in; a1 plane: closely: an jacent to the needle so 1 as: to renter: between the: needle and the:Bite:ofiithreazmdependingjfrom .cthex' work. to: the needle eye;lwhereby-i the retraction:- of J the needle will :lea've" thethreaid: Ioopedzimden: thesaid-ih'o'okt- The saiduprong'zonhook minke-- wise: constitutes-lone: membeigot a;.scissor. cutters by which thewloop; is t ultimately cut; the: succes= sively. cut loops i thus; providing-1 as pluraiityr or closely." associated .enrlsprojectingdrom tlietwork'. and: cons'titutingrthe: wits-Which it isstfiepfurposet 7 of themachinetbvniakdp. l

'Asrhere showng. hook; I fieisiof igoosanecleishape with the outer directedisubstantially" horizonta'lly, to a pointandi'with .agistraightiundersidet:

rearward from a thewp'o'znt iaidlsmef less1tharr the; stroke? of the: hook; At thesfrear zendl oft. this; straightwlportioniofithexundersidie :of the hook-,lthet hook notchedtupward sozthat astlie lo'o'p isrea; ceived; and passestrcarwardlyl'omthe: straightz'parta of the ho.ok;;it ultimately; comes-"to thlnOtChEdii end and is therebyrtretainedriromrslidlng baCk'Dfl'i the hook, It is: particularly at thisk notched more: tion 0f the 'hoolcthat the :sameqconstitutes a scissor member. The inner: end; Ofztheshnok widens"- and curves downward \to iorm zatbase portion. which'israttach'edpas by screws llrtoian arm: I85 in turn secured by screws-flu to therlett -endiofz ax lever 20 the fulcrum of whichhis'gtherauxlliary, shaft 2. I: to :whichtheiright endof ithe; lever isia'ttached by, setqscrew rzl. saidxauxiliaryzshaftzl is i shown mounted e-inxa': slntablerbearingipost 2 3 3 de-- 1 pending; as a: fixed part :from the base'iplate'i IO the several parts-so far described are common in the sewing machine art,,andobtaina synchronized verticalv reciprocation of the needle and;

- horizontal reciprocation of the feed doggtogtthei with a simultaneous-:limited 'verticalmoyementzof the dog ,for feedingthezwork-under the pressers foot. y o a o.

' The present machinedoesnat have a; bobblnas: usually found in sewing machines, but instead, pmVides-aprmrgor'hook l6 movable toward the needle from thesidethereof at a'position of the needle when below the throat plate and dog.

Another a armr N fixedwnsthisaauxiliarw on 1 the other side :of the 5 bearing; post from the firstementioned leven; conncctedaby a; link; 25 to a lever: arm fi proiectingiromithemaiin shatt" 2i By thismechanical curinectioniand arrange; ment of 1 parts, the hcnkesupportingslevenis rocked about the axis-J 01 the auxiliary shaft!. in syn chronism with: thewneedleioperation; It :is' to observed that theipointed endfofrzthe hook is sub stantially over the shaftgaszaaresult of which the oscillatory-1 motion; imparted" to? their functioningendaoi ith'eihockiis .substantially hori.

zontal a The complementaryicuttmg 3 members is here shown as an inverted LesWdrnrilembr z-l of which the nonzontauyei a VidS the cut'ting edgy-at vet-,2

tically disposed shank provides adjustable; mounting in =conneetiorr with 'a supporting Lhead;

28-on a horizontallykdispesed Q armora er crank 29 ofwliicli theo'tlier armdpends new i the pivotal mounting 30 at the juncture of the 2 arms. As here shown, the adjustable mounting is by virtue of a slot 3! in the supporting head 28 and an attaching screw 32 the shank of which passes through said slot into the shank of the I8 to which the other cutting member, that is. 5*

hook i6, is attached. Thus the two scissor mem bers move together about the common axis of the auxiliary shaft 2|. In addition to this common movement of the two members, the complementary member also has a swinging movement upon its pivotal mounting for fl'ecting the cut of the thread loop, By this construction, the members constituting the scissor jaws may be maintained in tight shearing contact with respect to each other-and have 'a minimum movement with respect to each other in the opera-' tion of the machine. .Thus, while the hook may be given asrelatively'long stroke-for hooking into the loop, the complementary member travels forwardly and rearwardly with'the hook and no wear results from that movement. Cutting movement between those membersis obtained by an adjustable link- 33 one end of which ridesron a stud 34 at the. lower end of the depending bell cra'nk lever 29 and the other end of which is mounted on. a' fixed stud 35 projecting laterally from'a fixed bracket 36 inturn depending from the base of the machine. ,Thus link 33 'has no longitudinal' movement, but can swing up and down to acconmiodate the necessary vertical motion of the lower end of the depending arm of the bell crank. By virtue of this arrangement, the same motivating energy which swings the hook functionsto also rock the bell-crank and its scissor member. .Attention is directed to the fact bellcrank'lever 23 is pivoted to arm l8, and that these two members each carry removable cutter or scissor members, these several parts'or members being removable from the machine as a unit, thus constituting a 'unitary structure removable as such, but with the scissor members maintained in shearing adjustment. I

- The length of loop or tuft can be changed as. I

desired by substitution of a-different hook mem- 'peat the above-described operations.

where the lower blade will function to cut the innermost loop thereafter. As the needle moves upward, the hook is then in the last-formed loop as well as several previously formed and not yet cut. The thread is therefore prevented from pulling out of the goods when the needl retracts, but instead, the thread slides in the needle eye, leaving the new loop with the other uncut loops. on the hook below the work or goods. moves back (in the same direction as the work is advanced) as the needle again comes down through the work and then forward again to re- Rearward movement of the hook, that is, away from the needle, is also accompanied by a resultant swinging of the bell crank which operates the lower cutting blade of the scissor members to cut the innermost loop on the upper member or hook, but

the adjustment is such that said lower blade does not close upon the entire upper member or hook, and accordingly leaves several loops thereon uncut. The uncut loops are successively cut as new. loops are formed and push the previously formed ones to theinner part of the hook where 'the cutting is effected.

, We claim: v v

1. A tufting machine comprising a unitary removable tufting unit, said unit providing a swing-. ing arm and a bell-crank lever pivoted at its elbow to said swinging arm adjacent an upper corner thereof, a hook member removably secured to, an upper end portion of said swinging arm and at a part thereof to one side ofsaid pivotal mounting of the said bell crank arm, a crosslever having its pivot substantially below the said hook member and atan outer endrigidly supporting said swinging arm with said swinging arm and cross-lever transverse one to the other whereby both the hook and bell crank lever are ing arm and a bell crank lever pivoted at its.

her H5 or other suitable positioning of the hook on arm [8 so the under sideof the said hook where the loops are formed is closer to or further from the throat plate of the machine. Change of this hook member is entirely independent of the pivotal connection 30 of 'arm' I8 with bell i crank 29, not requiring any. separation of the Pivotal connection. head 28 of bell crank 29 also has no disturbing effect upon the said pivotal connection 30, and

the relationship of the scissor edges is adjustable by manipulation of screw 32 with the unitary.

structure either on or off the machine. Screws l1 holding the hook IS on arm [8 can be manipu-.

lated and the hook changed whether the unitary structure is on or off the machine.

In operation, it will be observed that as the needle .descends so its eye comes to about the level of the hook, said hook moves inward close to the needle, so the outer lip of the hook enters the loop of thread presented by-the-needle. Such entry serves to push previously formed loop still on the hook inward thereof to a position thereon Adjustment of .blade 21 in.

moved laterally as the cross lever swings up and down, said hook member having a projecting part thereof constituting a scissor member, and a complementary scissor member carried by said bell crank lever in cutting association with the first said scissor member, and means for supporting said complementary scissor member on said bell crank lever for adjusting the jaw opening between said scissor members. j

2. A tufting machine comprising a unitary removable tufting unit, said unit providing a swingelbow to said swinging arm adjacent an upper comer thereof, a hook member removably secured to anupper end portion of said swinging arm" and extending from an opposite upper corner thereof to the side'of the same away from said pivotal mounting of the said bell crankarm, a

cross-lever'having its pivot substantially below the said hook member and at an outer end rigidly supporting said swinging armwith said swinging arm and cross-lever transverse one to the other whereby both the hook and bell crank lever are moved laterally as the cross lever swings up and down, said hook member having an outer end ing said complementary scissor member on said bell crank lever for adjusting the between said scissor members.

MICHAEL CHINNICI; 4 ROSARIO cANISH! The hook jaw opening I 

